mirror of
https://github.com/godotengine/godot.git
synced 2024-11-24 21:22:48 +00:00
410 lines
14 KiB
C++
410 lines
14 KiB
C++
/**************************************************************************/
|
|
/* resource_importer_texture_atlas.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#include "resource_importer_texture_atlas.h"
|
|
|
|
#include "atlas_import_failed.xpm"
|
|
#include "core/config/project_settings.h"
|
|
#include "core/io/file_access.h"
|
|
#include "core/io/image_loader.h"
|
|
#include "core/io/resource_saver.h"
|
|
#include "core/math/geometry_2d.h"
|
|
#include "editor/editor_atlas_packer.h"
|
|
#include "scene/resources/atlas_texture.h"
|
|
#include "scene/resources/image_texture.h"
|
|
#include "scene/resources/mesh.h"
|
|
#include "scene/resources/mesh_texture.h"
|
|
|
|
String ResourceImporterTextureAtlas::get_importer_name() const {
|
|
return "texture_atlas";
|
|
}
|
|
|
|
String ResourceImporterTextureAtlas::get_visible_name() const {
|
|
return "TextureAtlas";
|
|
}
|
|
|
|
void ResourceImporterTextureAtlas::get_recognized_extensions(List<String> *p_extensions) const {
|
|
ImageLoader::get_recognized_extensions(p_extensions);
|
|
}
|
|
|
|
String ResourceImporterTextureAtlas::get_save_extension() const {
|
|
return "res";
|
|
}
|
|
|
|
String ResourceImporterTextureAtlas::get_resource_type() const {
|
|
return "Texture2D";
|
|
}
|
|
|
|
bool ResourceImporterTextureAtlas::get_option_visibility(const String &p_path, const String &p_option, const HashMap<StringName, Variant> &p_options) const {
|
|
if (p_option == "crop_to_region" && int(p_options["import_mode"]) != IMPORT_MODE_REGION) {
|
|
return false;
|
|
} else if (p_option == "trim_alpha_border_from_region" && int(p_options["import_mode"]) != IMPORT_MODE_REGION) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int ResourceImporterTextureAtlas::get_preset_count() const {
|
|
return 0;
|
|
}
|
|
|
|
String ResourceImporterTextureAtlas::get_preset_name(int p_idx) const {
|
|
return String();
|
|
}
|
|
|
|
void ResourceImporterTextureAtlas::get_import_options(const String &p_path, List<ImportOption> *r_options, int p_preset) const {
|
|
r_options->push_back(ImportOption(PropertyInfo(Variant::STRING, "atlas_file", PROPERTY_HINT_SAVE_FILE, "*.png"), ""));
|
|
r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "import_mode", PROPERTY_HINT_ENUM, "Region,Mesh2D", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED), 0));
|
|
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "crop_to_region"), false));
|
|
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "trim_alpha_border_from_region"), true));
|
|
}
|
|
|
|
String ResourceImporterTextureAtlas::get_option_group_file() const {
|
|
return "atlas_file";
|
|
}
|
|
|
|
Error ResourceImporterTextureAtlas::import(const String &p_source_file, const String &p_save_path, const HashMap<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
|
|
/* If this happens, it's because the atlas_file field was not filled, so just import a broken texture */
|
|
|
|
//use an xpm because it's size independent, the editor images are vector and size dependent
|
|
//it's a simple hack
|
|
Ref<Image> broken = memnew(Image((const char **)atlas_import_failed_xpm));
|
|
ResourceSaver::save(ImageTexture::create_from_image(broken), p_save_path + ".tex");
|
|
|
|
return OK;
|
|
}
|
|
|
|
// FIXME: Rasterization has issues, see https://github.com/godotengine/godot/issues/68350#issuecomment-1305610290
|
|
static void _plot_triangle(Vector2i *p_vertices, const Vector2i &p_offset, bool p_transposed, Ref<Image> p_image, const Ref<Image> &p_src_image) {
|
|
int width = p_image->get_width();
|
|
int height = p_image->get_height();
|
|
int src_width = p_src_image->get_width();
|
|
int src_height = p_src_image->get_height();
|
|
|
|
int x[3];
|
|
int y[3];
|
|
|
|
for (int j = 0; j < 3; j++) {
|
|
x[j] = p_vertices[j].x;
|
|
y[j] = p_vertices[j].y;
|
|
}
|
|
|
|
// sort the points vertically
|
|
if (y[1] > y[2]) {
|
|
SWAP(x[1], x[2]);
|
|
SWAP(y[1], y[2]);
|
|
}
|
|
if (y[0] > y[1]) {
|
|
SWAP(x[0], x[1]);
|
|
SWAP(y[0], y[1]);
|
|
}
|
|
if (y[1] > y[2]) {
|
|
SWAP(x[1], x[2]);
|
|
SWAP(y[1], y[2]);
|
|
}
|
|
|
|
double dx_far = double(x[2] - x[0]) / (y[2] - y[0] + 1);
|
|
double dx_upper = double(x[1] - x[0]) / (y[1] - y[0] + 1);
|
|
double dx_low = double(x[2] - x[1]) / (y[2] - y[1] + 1);
|
|
double xf = x[0];
|
|
double xt = x[0] + dx_upper; // if y[0] == y[1], special case
|
|
int max_y = MIN(y[2], p_transposed ? (width - p_offset.x - 1) : (height - p_offset.y - 1));
|
|
for (int yi = y[0]; yi < max_y; yi++) {
|
|
if (yi >= 0) {
|
|
for (int xi = (xf > 0 ? int(xf) : 0); xi < (xt <= src_width ? xt : src_width); xi++) {
|
|
int px = xi, py = yi;
|
|
int sx = px, sy = py;
|
|
sx = CLAMP(sx, 0, src_width - 1);
|
|
sy = CLAMP(sy, 0, src_height - 1);
|
|
Color color = p_src_image->get_pixel(sx, sy);
|
|
if (p_transposed) {
|
|
SWAP(px, py);
|
|
}
|
|
px += p_offset.x;
|
|
py += p_offset.y;
|
|
|
|
//may have been cropped, so don't blit what is not visible?
|
|
if (px < 0 || px >= width) {
|
|
continue;
|
|
}
|
|
if (py < 0 || py >= height) {
|
|
continue;
|
|
}
|
|
p_image->set_pixel(px, py, color);
|
|
}
|
|
|
|
for (int xi = (xf < src_width ? int(xf) : src_width - 1); xi >= (xt > 0 ? xt : 0); xi--) {
|
|
int px = xi, py = yi;
|
|
int sx = px, sy = py;
|
|
sx = CLAMP(sx, 0, src_width - 1);
|
|
sy = CLAMP(sy, 0, src_height - 1);
|
|
Color color = p_src_image->get_pixel(sx, sy);
|
|
if (p_transposed) {
|
|
SWAP(px, py);
|
|
}
|
|
px += p_offset.x;
|
|
py += p_offset.y;
|
|
|
|
//may have been cropped, so don't blit what is not visible?
|
|
if (px < 0 || px >= width) {
|
|
continue;
|
|
}
|
|
if (py < 0 || py >= height) {
|
|
continue;
|
|
}
|
|
p_image->set_pixel(px, py, color);
|
|
}
|
|
}
|
|
xf += dx_far;
|
|
if (yi < y[1]) {
|
|
xt += dx_upper;
|
|
} else {
|
|
xt += dx_low;
|
|
}
|
|
}
|
|
}
|
|
|
|
Error ResourceImporterTextureAtlas::import_group_file(const String &p_group_file, const HashMap<String, HashMap<StringName, Variant>> &p_source_file_options, const HashMap<String, String> &p_base_paths) {
|
|
ERR_FAIL_COND_V(p_source_file_options.is_empty(), ERR_BUG); //should never happen
|
|
|
|
Vector<EditorAtlasPacker::Chart> charts;
|
|
Vector<PackData> pack_data_files;
|
|
|
|
pack_data_files.resize(p_source_file_options.size());
|
|
|
|
int idx = 0;
|
|
for (const KeyValue<String, HashMap<StringName, Variant>> &E : p_source_file_options) {
|
|
PackData &pack_data = pack_data_files.write[idx];
|
|
const String &source = E.key;
|
|
const HashMap<StringName, Variant> &options = E.value;
|
|
|
|
Ref<Image> image;
|
|
image.instantiate();
|
|
Error err = ImageLoader::load_image(source, image);
|
|
ERR_CONTINUE(err != OK);
|
|
|
|
pack_data.image = image;
|
|
|
|
int mode = options["import_mode"];
|
|
|
|
if (mode == IMPORT_MODE_REGION) {
|
|
pack_data.is_mesh = false;
|
|
pack_data.is_cropped = options["crop_to_region"];
|
|
|
|
EditorAtlasPacker::Chart chart;
|
|
|
|
Rect2i used_rect = Rect2i(Vector2i(), image->get_size());
|
|
if (options["trim_alpha_border_from_region"]) {
|
|
// Clip a region from the image.
|
|
used_rect = image->get_used_rect();
|
|
}
|
|
pack_data.region = used_rect;
|
|
|
|
chart.vertices.push_back(used_rect.position);
|
|
chart.vertices.push_back(used_rect.position + Vector2i(used_rect.size.x, 0));
|
|
chart.vertices.push_back(used_rect.position + Vector2i(used_rect.size.x, used_rect.size.y));
|
|
chart.vertices.push_back(used_rect.position + Vector2i(0, used_rect.size.y));
|
|
EditorAtlasPacker::Chart::Face f;
|
|
f.vertex[0] = 0;
|
|
f.vertex[1] = 1;
|
|
f.vertex[2] = 2;
|
|
chart.faces.push_back(f);
|
|
f.vertex[0] = 0;
|
|
f.vertex[1] = 2;
|
|
f.vertex[2] = 3;
|
|
chart.faces.push_back(f);
|
|
chart.can_transpose = false;
|
|
pack_data.chart_vertices.push_back(chart.vertices);
|
|
pack_data.chart_pieces.push_back(charts.size());
|
|
charts.push_back(chart);
|
|
|
|
} else {
|
|
pack_data.is_mesh = true;
|
|
|
|
Ref<BitMap> bit_map;
|
|
bit_map.instantiate();
|
|
bit_map->create_from_image_alpha(image);
|
|
Vector<Vector<Vector2>> polygons = bit_map->clip_opaque_to_polygons(Rect2(Vector2(), image->get_size()));
|
|
|
|
for (int j = 0; j < polygons.size(); j++) {
|
|
EditorAtlasPacker::Chart chart;
|
|
chart.vertices = polygons[j];
|
|
chart.can_transpose = true;
|
|
|
|
Vector<int> poly = Geometry2D::triangulate_polygon(polygons[j]);
|
|
for (int i = 0; i < poly.size(); i += 3) {
|
|
EditorAtlasPacker::Chart::Face f;
|
|
f.vertex[0] = poly[i + 0];
|
|
f.vertex[1] = poly[i + 1];
|
|
f.vertex[2] = poly[i + 2];
|
|
chart.faces.push_back(f);
|
|
}
|
|
|
|
pack_data.chart_pieces.push_back(charts.size());
|
|
charts.push_back(chart);
|
|
|
|
pack_data.chart_vertices.push_back(polygons[j]);
|
|
}
|
|
}
|
|
idx++;
|
|
}
|
|
|
|
const int max_width = (int)GLOBAL_GET("editor/import/atlas_max_width");
|
|
|
|
//pack the charts
|
|
int atlas_width, atlas_height;
|
|
EditorAtlasPacker::chart_pack(charts, atlas_width, atlas_height, max_width);
|
|
|
|
if (atlas_height > max_width * 2) {
|
|
WARN_PRINT(vformat(TTR("%s: Atlas texture significantly larger on one axis (%d), consider changing the `editor/import/atlas_max_width` Project Setting to allow a wider texture, making the result more even in size."), p_group_file, atlas_height));
|
|
}
|
|
|
|
//blit the atlas
|
|
Ref<Image> new_atlas = Image::create_empty(atlas_width, atlas_height, false, Image::FORMAT_RGBA8);
|
|
|
|
for (int i = 0; i < pack_data_files.size(); i++) {
|
|
PackData &pack_data = pack_data_files.write[i];
|
|
|
|
for (int j = 0; j < pack_data.chart_pieces.size(); j++) {
|
|
const EditorAtlasPacker::Chart &chart = charts[pack_data.chart_pieces[j]];
|
|
for (int k = 0; k < chart.faces.size(); k++) {
|
|
Vector2i positions[3];
|
|
for (int l = 0; l < 3; l++) {
|
|
int vertex_idx = chart.faces[k].vertex[l];
|
|
positions[l] = Vector2i(chart.vertices[vertex_idx]);
|
|
}
|
|
|
|
_plot_triangle(positions, Vector2i(chart.final_offset), chart.transposed, new_atlas, pack_data.image);
|
|
}
|
|
}
|
|
}
|
|
|
|
//save the atlas
|
|
|
|
new_atlas->save_png(p_group_file);
|
|
|
|
//update cache if existing, else create
|
|
Ref<Texture2D> cache;
|
|
cache = ResourceCache::get_ref(p_group_file);
|
|
if (!cache.is_valid()) {
|
|
Ref<ImageTexture> res_cache = ImageTexture::create_from_image(new_atlas);
|
|
res_cache->set_path(p_group_file);
|
|
cache = res_cache;
|
|
}
|
|
|
|
//save the images
|
|
idx = 0;
|
|
for (const KeyValue<String, HashMap<StringName, Variant>> &E : p_source_file_options) {
|
|
PackData &pack_data = pack_data_files.write[idx];
|
|
|
|
Ref<Texture2D> texture;
|
|
|
|
if (!pack_data.is_mesh) {
|
|
Vector2 offset = charts[pack_data.chart_pieces[0]].vertices[0] + charts[pack_data.chart_pieces[0]].final_offset;
|
|
|
|
//region
|
|
Ref<AtlasTexture> atlas_texture;
|
|
atlas_texture.instantiate();
|
|
atlas_texture->set_atlas(cache);
|
|
atlas_texture->set_region(Rect2(offset, pack_data.region.size));
|
|
|
|
if (!pack_data.is_cropped) {
|
|
atlas_texture->set_margin(Rect2(pack_data.region.position, pack_data.image->get_size() - pack_data.region.size));
|
|
}
|
|
|
|
texture = atlas_texture;
|
|
} else {
|
|
Ref<ArrayMesh> mesh;
|
|
mesh.instantiate();
|
|
|
|
for (int i = 0; i < pack_data.chart_pieces.size(); i++) {
|
|
const EditorAtlasPacker::Chart &chart = charts[pack_data.chart_pieces[i]];
|
|
Vector<Vector2> vertices;
|
|
Vector<int> indices;
|
|
Vector<Vector2> uvs;
|
|
int vc = chart.vertices.size();
|
|
int fc = chart.faces.size();
|
|
vertices.resize(vc);
|
|
uvs.resize(vc);
|
|
indices.resize(fc * 3);
|
|
|
|
{
|
|
Vector2 *vw = vertices.ptrw();
|
|
int *iw = indices.ptrw();
|
|
Vector2 *uvw = uvs.ptrw();
|
|
|
|
for (int j = 0; j < vc; j++) {
|
|
vw[j] = chart.vertices[j];
|
|
Vector2 uv = chart.vertices[j];
|
|
if (chart.transposed) {
|
|
SWAP(uv.x, uv.y);
|
|
}
|
|
uv += chart.final_offset;
|
|
uv /= new_atlas->get_size(); //normalize uv to 0-1 range
|
|
uvw[j] = uv;
|
|
}
|
|
|
|
for (int j = 0; j < fc; j++) {
|
|
iw[j * 3 + 0] = chart.faces[j].vertex[0];
|
|
iw[j * 3 + 1] = chart.faces[j].vertex[1];
|
|
iw[j * 3 + 2] = chart.faces[j].vertex[2];
|
|
}
|
|
}
|
|
|
|
Array arrays;
|
|
arrays.resize(Mesh::ARRAY_MAX);
|
|
arrays[Mesh::ARRAY_VERTEX] = vertices;
|
|
arrays[Mesh::ARRAY_TEX_UV] = uvs;
|
|
arrays[Mesh::ARRAY_INDEX] = indices;
|
|
|
|
mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, arrays);
|
|
}
|
|
|
|
Ref<MeshTexture> mesh_texture;
|
|
mesh_texture.instantiate();
|
|
mesh_texture->set_base_texture(cache);
|
|
mesh_texture->set_image_size(pack_data.image->get_size());
|
|
mesh_texture->set_mesh(mesh);
|
|
|
|
texture = mesh_texture;
|
|
}
|
|
|
|
String save_path = p_base_paths[E.key] + ".res";
|
|
ResourceSaver::save(texture, save_path);
|
|
idx++;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
ResourceImporterTextureAtlas::ResourceImporterTextureAtlas() {
|
|
}
|